112665 has 32 divisors (see below), whose sum is σ = 218880. Its totient is φ = 48384.

The previous prime is 112663. The next prime is 112687. The reversal of 112665 is 566211.

It is a happy number.

It is not a de Polignac number, because 112665 - 2¹ = 112663 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112663) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3027 + ... + 3063.

It is an arithmetic number, because the mean of its divisors is an integer number (6840).

2¹¹²⁶⁶⁵ is an apocalyptic number.

112665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

112665 is a deficient number, since it is larger than the sum of its proper divisors (106215).

112665 is a wasteful number, since it uses less digits than its factorization.

112665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81.

The product of its digits is 360, while the sum is 21.

The square root of 112665 is about 335.6560739805. The cubic root of 112665 is about 48.2980585531.

Adding to 112665 its reverse (566211), we get a palindrome (678876).

It can be divided in two parts, 112 and 665, that added together give a palindrome (777).

The spelling of 112665 in words is "one hundred twelve thousand, six hundred sixty-five".